Pump.



W. S. McFERREN.

PUMP.-

APPLICATION HLED 1ULY5. IBIS.

Patented Aug. 21, 1917.

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Pam.

Specification of Letters Patent. Patented Aug, 21, 1917,

Application filed. July 5, 1916. Serial No. 107,652.

Z '0 all whom 2'6 may concern:

Be it known that I, IVILLIAM S. 'McFnnmm, a citizen of the United States, residing at Chambersburg, in the county of Franklin and State of Pennsylvania, have invented new and useful Improvements in Pumps, of which the following is a specification.

This invention relates to pumps and has particular application to a double acting force pump.

The invention contemplates the provision of float valves for pumps of this character, to be automatically opened by the surplus water remaining in the supply pipe subsequent to the pumping operation, thus permitting this water to return toits source, with a view of preventing freezing and bursting of pipes during the winter months.

Another object of importance resides in the provision of a fixed base and a relatively movable base for the device, which latter automatically adjusts itself to an irregular surface for the purpose of supporting the fixed base in a true horizontal position.

The nature and advantages of the invention will be better understood when the following description is read in connection with the accompanyingdrawing, the invention residing in the construction, combination and arrangement of parts as claimed.

In the drawing forming part of this application like numerals of reference indicate similar parts in the several views and wherein Figure 1 is an elevation of a pump constructed in accordance with my invention.

Fig. 2 is a central vertical sectional view. Referring more particularly to the draw-. ing in detail a and 7) indicate respectively a pair of spaced blocks, between which a pair of cylinders 0 are mounted, both cylinders communicating with an enlarged central chamber (Z provided in the upper block a, through the ports 6. The blocks are rigidly connected together and braced by means of the bolts 7. Rising from the upper block is a supply pipe 9 provided with the usual spout 7L. while arranged for sliding movement within each of the cylinders 0 is a sucker or plunger 27, the latter being removably secured in any suitable manner to the adjacent ends of the operating rods in, the upper corresponding extremities of the rod being connected with the lever Z at spaced points, the lever being provided between its ends upon a suitable arm m projecting from the supply pipe.

Arranged within the enlarged chamber cl are flap valves, one for each of the ports e which they normally close. Each valve preferably embodies a leather strip a with which a piece of wood, cork or other suitable floating material is secured. Subsequent to the pumping operation a considerable amount of water generally remains in the supply pipe g, which results in freezing and sometimes bursting of the pipe during the winter months.

With a pump constructed in accordance with my invention this water is collected in the enlarged chamber (Z, and as the floats seek the surface of the water the valves are opened to permit the water contained in the chamber a to return to its source thereby overcoming the above noted objections. As the surplus water passes from the enlarged chamber 0? the valves assume their normal or closed position.

The block b constitutes what may be termed a fixed base for the device, and suspended from this base is a relatively movable base t which latter is pivotally connected at a central point with the fixed base so as to automatically accommodate itself to an uneven or irregular surface at the bottom of a cistern. Manifestly the adjustable bottom 1% operates to maintain the fixed bottom in true horizontal position, and the device as a unit in true upright position, thereby relieving one or the other side of the device of undue strain which is the result when the device is supported obliquely upon the bot tom of the cistern.

It is believed that from the foregoing description the nature and advantages of the invention will be apparent, and while I have shown and described what .I now consider the preferred embodiment of the invention I desire to have it understood that such changes in the construction and arrangement may be resorted to when desired as fall within the scope of what is claimed.

What is claimed is:

In a pump organization, the combination of a pair of spaced blocks, rods connecting said blocks and holding the latter in spaced relation, a plurality of cylinders mounted between said blocks, one of said blocks having an enlarged compartment, the upper ends 0 said cylinders being offset in a direction toward each other and communicating With said chamber, a supply pipe rising from said ceive the surplus Water from the supply pipe subsequent to the pumping operation, and a Gcpies of this patent may be obtained for float carried by each valve for holding said valves in an open position until the Water 111 said chamber passestheretrom into the cylinde'rs, whereupon said valves automatically assume a closed position.

In testimony whereof I affix my signature. WILLIAM S. MGFERREN.

Witnesses:

S. MCFERREN, C. M. ORR.

five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

